Hi Wanda,
I've had very good dedup savings with PSTs in general. I've deployed
client side deduplication across all remote sites, and I wouldn't have had
backups complete if it wasn't for deduplication. What used to take upwards of 3
or 4 days to backup is now complete in a few hours.
PST's are a nightmare for more organizations, and this solution proved
useful to us for the time being. With is a summary from a heavy load remote
site. Last I checked when I was doing the initial testing (last year) that
server alone had over 200 pst change on a daily basis with most over 5GB and
upwards of 20GB.
You would need a beefy tsm server to handle the overhead. For my data,
as of last week I have 17TB in de duplicated savings across the storage pools.
Hope that helps,
01/24/2014 00:13:01 --- SCHEDULEREC STATUS BEGIN
01/24/2014 00:13:01 Total number of objects inspected: 741,410
01/24/2014 00:13:01 Total number of objects backed up: 1,572
01/24/2014 00:13:01 Total number of objects updated: 0
01/24/2014 00:13:01 Total number of objects rebound: 0
01/24/2014 00:13:01 Total number of objects deleted: 0
01/24/2014 00:13:01 Total number of objects expired: 93
01/24/2014 00:13:01 Total number of objects failed: 4
01/24/2014 00:13:01 Total objects deduplicated: 955
01/24/2014 00:13:01 Total number of bytes inspected: 1.05 TB
01/24/2014 00:13:01 Total number of bytes processed: 1.45 GB
01/24/2014 00:13:01 Total bytes before deduplication: 345.70 GB
01/24/2014 00:13:01 Total bytes after deduplication: 1.51 GB
01/24/2014 00:13:01 Total number of bytes transferred: 1.45 GB
01/24/2014 00:13:01 Data transfer time: 1,484.90 sec
01/24/2014 00:13:01 Network data transfer rate: 1,030.55 KB/sec
01/24/2014 00:13:01 Aggregate data transfer rate: 94.09 KB/sec
01/24/2014 00:13:01 Objects compressed by: 26%
01/24/2014 00:13:01 Deduplication reduction: 99.57%
01/24/2014 00:13:01 Total data reduction ratio: 99.87%
01/24/2014 00:13:01 Elapsed processing time: 04:31:02
01/24/2014 00:13:01 --- SCHEDULEREC STATUS END
01/24/2014 00:13:01 --- SCHEDULEREC OBJECT END NODENAME_INCR 01/23/2014 19:30:00
01/24/2014 00:13:01 Scheduled event 'NODENAME_INCR' completed successfully.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
Prather, Wanda
Sent: Friday, January 24, 2014 3:44 PM
To: ADSM-L@VM.MARIST.EDU
Subject: [ADSM-L] How well do .pst files dedup?
Anybody looked in detail at how well .pst files dedup with TSM - (client or
server-end)?
**Please note new office phone:
Wanda Prather | Senior Technical Specialist | wanda.prat...@icfi.com |
www.icfi.com<http://www.icfi.com> | 410-868-4872 (m) ICF International | 7125
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